What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta and Qantas Airways are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of December 2025.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$552 Cheap Flights from Louisville to Sydney in 2025/26

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7:00 am - 8:30 am

SDF

SYD

33h 30m2 stops

10:40 am - 7:02 pm

SYD

SDF

24h 22m2 stops

$1,166Delta

Sun, Jan 18 - Sun, Jan 25

3:22 pm - 9:05 am

SDF

SYD

25h 43m2 stops

11:50 am - 7:54 pm

SYD

SDF

24h 04m1 stop

$1,221United Airlines

Sun, Jan 18 - Sun, Jan 25

9:15 am - 7:00 am

SDF

SYD

30h 45m1 stop

10:20 am - 2:26 pm

SYD

SDF

42h 06m2 stops

$1,228United Airlines

Thu, Mar 19 - Sun, Apr 5

5:45 pm - 9:05 am

SDF

SYD

24h 20m2 stops

9:30 am - 10:32 pm

SYD

SDF

51h 02m2 stops

$1,232United Airlines

Thu, Mar 19 - Sun, Apr 5

3:30 pm - 7:00 am

SDF

SYD

23h 30m1 stop

11:50 am - 7:54 pm

SYD

SDF

24h 04m1 stop

$1,269United Airlines

Sat, Feb 7 - Wed, Feb 11

5:45 pm - 9:05 am

SDF

SYD

24h 20m2 stops

11:50 am - 7:51 pm

SYD

SDF

23h 01m1 stop

$1,270United Airlines

Sat, Mar 14 - Wed, Mar 18

8:55 am - 8:30 am

SDF

SYD

31h 35m2 stops

2:15 pm - 8:28 pm

SYD

SDF

22h 13m2 stops

$1,274Delta

Sun, Feb 15 - Thu, Feb 19

6:32 am - 5:55 pm

SDF

SYD

44h 23m2 stops

3:40 pm - 7:07 pm

SYD

SDF

41h 27m2 stops

$1,316Multiple Airlines

Thu, Mar 19 - Sun, Apr 5

3:30 pm - 7:00 am

SDF

SYD

24h 30m1 stop

9:30 am - 10:26 pm

SYD

SDF

26h 56m2 stops

$1,366United Airlines

Thu, Mar 19 - Sun, Apr 5

6:24 pm - 6:55 am

SDF

SYD

21h 31m1 stop

12:00 pm - 5:37 pm

SYD

SDF

19h 37m1 stop

$1,827Qantas Airways

Thu, Mar 19 - Sun, Apr 5

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Mar 19

SDF6:24 pmLouisville Intl

21h 31m

1 stop

SYD6:55 amSydney Kingsford Smith

Apr 5

SYD12:00 pmSydney Kingsford Smith

19h 37m

1 stop

SDF5:37 pmLouisville Intl

$1,827

Find similar

Qantas Airways

Mar 19

SDF6:24 pmLouisville Intl

21h 31m

1 stop

SYD6:55 amSydney Kingsford Smith

Apr 5

SYD12:00 pmSydney Kingsford Smith

19h 37m

1 stop

SDF5:37 pmLouisville Intl

$1,828

Find similar

Qantas Airways

Mar 19

SDF6:24 pmLouisville Intl

21h 31m

1 stop

SYD6:55 amSydney Kingsford Smith

Apr 5

SYD12:00 pmSydney Kingsford Smith

19h 37m

1 stop

SDF5:37 pmLouisville Intl

$1,846

Find similar

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

United Airlines

Jan 18

SDF3:22 pmLouisville Intl

25h 43m

2 stops

SYD9:05 amSydney Kingsford Smith

Jan 25

SYD11:50 amSydney Kingsford Smith

24h 04m

1 stop

SDF7:54 pmLouisville Intl

$1,221

Find similar

United Airlines

Mar 19

SDF9:15 amLouisville Intl

30h 45m

1 stop

SYD7:00 amSydney Kingsford Smith

Apr 5

SYD10:20 amSydney Kingsford Smith

42h 06m

2 stops

SDF2:26 pmLouisville Intl

$1,228

Find similar

United Airlines

Mar 19

SDF5:45 pmLouisville Intl

24h 20m

2 stops

SYD9:05 amSydney Kingsford Smith

Apr 5

SYD9:30 amSydney Kingsford Smith

51h 02m

2 stops

SDF10:32 pmLouisville Intl

$1,232

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 1/18

7:00 am-8:30 am

2 stops33h 30m

Sydney Kingsford Smith

Sun 1/25

10:40 am-7:02 pm

2 stops24h 22m

$1,166

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 1/18

3:22 pm-9:05 am

2 stops25h 43m

Sydney Kingsford Smith

Sun 1/25

11:50 am-7:54 pm

1 stop24h 04m

$1,221

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

9:15 am-7:00 am

1 stop30h 45m

Sydney Kingsford Smith

Sun 4/5

10:20 am-2:26 pm

2 stops42h 06m

$1,228

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

5:45 pm-9:05 am

2 stops24h 20m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:32 pm

2 stops51h 02m

$1,232

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/7

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Wed 2/11

11:50 am-7:54 pm

1 stop24h 04m

$1,269

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 3/14

5:45 pm-9:05 am

2 stops24h 20m

Sydney Kingsford Smith

Wed 3/18

11:50 am-7:51 pm

1 stop23h 01m

$1,270

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 2/15

8:55 am-8:30 am

2 stops31h 35m

Sydney Kingsford Smith

Thu 2/19

2:15 pm-8:28 pm

2 stops22h 13m

$1,274

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

6:32 am-5:55 pm

2 stops44h 23m

Sydney Kingsford Smith

Sun 4/5

3:40 pm-7:07 pm

2 stops41h 27m

$1,316

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

3:30 pm-7:00 am

1 stop24h 30m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:26 pm

2 stops26h 56m

$1,366

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

6:24 pm-6:55 am

1 stop21h 31m

Sydney Kingsford Smith

Sun 4/5

12:00 pm-5:37 pm

1 stop19h 37m

$1,827

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Sydney?

In general, April is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,110. If you are unable to visit Sydney during the month of April, then departing from Louisville during the month November is also very affordable. Most momondo users find prices during this month for around $1,142.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Louisville to Sydney at noon for as low as $1,343. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the morning, with an average ticket price of $1,798. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	23h 20m
Direct flights	None

The fastest flight from Louisville to Sydney takes 23h 20m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 21h 31m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of December 2025.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (77% of total bookings). The next most popular airline is Delta (23%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $930	Free Cancellation	Rating 7.4 9,066 reviews		Search United Airlines flights
Delta	PriceFrom $979	Free Cancellation	Rating 7.9 8,011 reviews		Search Delta flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Manly

Penrith

Cronulla

Lithgow

Leura

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Airports servicing New South Wales

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Flights to Melbournefrom $670

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Cheap flights from Louisville to Sydney from $552

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Qantas Airways flights from Louisville to Sydney

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How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sydney?

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta and Qantas Airways are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

Direct flights

How far is Louisville Intl to Sydney Kingsford Smith by plane?

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

How can momondo help me find flights from Louisville to Sydney?

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales